Actor Andy Serkis said he got into the skin of his character Gollum in The Lord Of The Rings films by crawling around on the floor.

"I used to walk on all fours off set when we were filming Lord of the Rings. I spent a lot of time in preparation for that (as Gollum); I would go off for walks on all fours for hours," Serkis said, reports femalefirst.co.uk.